Vulnerabilities (CVE)

Filtered by vendor Zyxel Subscribe
Total 308 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2011-4504 2 Genmei Mori, Zyxel 2 Pseudoics, P-330w Router 2025-04-11 7.5 HIGH N/A
The UPnP IGD implementation in the Pseudo ICS UPnP software on the ZyXEL P-330W allows remote attackers to establish arbitrary port mappings by sending a UPnP AddPortMapping action in a SOAP request to the WAN interface, related to an "external forwarding" vulnerability.
CVE-2011-0746 1 Zyxel 1 O2 Dsl Router Classic 2025-04-11 4.3 MEDIUM N/A
Cross-site request forgery (CSRF) vulnerability in Forms/PortForwarding_Edit_1 on the ZyXEL O2 DSL Router Classic allows remote attackers to hijack the authentication of administrators for requests that insert cross-site scripting (XSS) sequences via the PortRule_Name parameter.
CVE-2013-6786 6 Allegrosoft, Dlink, Huawei and 3 more 7 Rompager, Dsl-2640r, Dsl-2641r and 4 more 2025-04-11 4.3 MEDIUM N/A
Cross-site scripting (XSS) vulnerability in Allegro RomPager before 4.51, as used on the ZyXEL P660HW-D1, Huawei MT882, Sitecom WL-174, TP-LINK TD-8816, and D-Link DSL-2640R and DSL-2641R, when the "forbidden author header" protection mechanism is bypassed, allows remote attackers to inject arbitrary web script or HTML by requesting a nonexistent URI in conjunction with a crafted HTTP Referer header that is not properly handled in a 404 page. NOTE: there is no CVE for a "URL redirection" issue that some sources list separately.
CVE-2007-4319 1 Zyxel 2 Zynos, Zywall 2 2025-04-09 4.0 MEDIUM N/A
The management interface in ZyNOS firmware 3.62(WK.6) on the Zyxel Zywall 2 device allows remote authenticated administrators to cause a denial of service (infinite reboot loop) via invalid configuration data. NOTE: this issue might not cross privilege boundaries, and it might be resultant from CSRF; if so, then it should not be included in CVE.
CVE-2008-1160 1 Zyxel 2 Zywall 1050, Zywall 1050 Firmware 2025-04-09 7.5 HIGH 9.8 CRITICAL
ZyXEL ZyWALL 1050 has a hard-coded password for the Quagga and Zebra processes that is not changed when it is set by a user, which allows remote attackers to gain privileges.
CVE-2008-1525 1 Zyxel 3 Prestige 660, Prestige 661, Zynos 2025-04-09 5.0 MEDIUM N/A
The default SNMP configuration on ZyXEL Prestige routers, including P-660 and P-661 models with firmware 3.40(AGD.2) through 3.40(AHQ.3), has a Trusted Host value of 0.0.0.0, which allows remote attackers to send SNMP requests from any source IP address.
CVE-2008-1529 1 Zyxel 3 Prestige 660, Prestige 661, Zynos 2025-04-09 5.0 MEDIUM N/A
ZyXEL Prestige routers have a minimum password length for the admin account that is too small, which makes it easier for remote attackers to guess passwords via brute force methods.
CVE-2007-4316 1 Zyxel 2 Zynos, Zywall 2 2025-04-09 4.3 MEDIUM N/A
The management interface in ZyNOS firmware 3.62(WK.6) on the Zyxel Zywall 2 device has a certain default password, which allows remote attackers to perform administrative actions.
CVE-2008-1527 1 Zyxel 3 Prestige 660, Prestige 661, Zynos 2025-04-09 7.5 HIGH N/A
ZyXEL Prestige routers, including P-660, P-661, and P-662 models with firmware 3.40(PE9) and 3.40(AGD.2) through 3.40(AHQ.3), support authentication over HTTP via a hash string in the hiddenPassword field, which allows remote attackers to obtain access via a replay attack.
CVE-2007-6730 1 Zyxel 1 P-330w Router 2025-04-09 9.3 HIGH N/A
Multiple cross-site request forgery (CSRF) vulnerabilities in the web management interface in the ZyXEL P-330W router allow remote attackers to hijack the authentication of administrators for requests that (1) enable remote router management via goform/formRmtMgt or (2) modify the administrator password via goform/formPasswordSetup.
CVE-2008-1259 1 Zyxel 1 P-2602hw-d1a 2025-04-09 9.3 HIGH N/A
The Zyxel P-2602HW-D1A router with 3.40(AJZ.1) firmware maintains authentication state by IP address, which allows remote attackers to bypass authentication by establishing a session from a source IP address of a user who previously authenticated within the previous 5 minutes.
CVE-2008-1523 1 Zyxel 3 Prestige 660, Prestige 661, Zynos 2025-04-09 5.0 MEDIUM N/A
ZyXEL Prestige routers, including P-660, P-661, and P-662 models with firmware 3.40(AGD.2) through 3.40(AHQ.3), allow remote authenticated users to obtain ISP and Dynamic DNS credentials by sending a direct request for (1) WAN.html, (2) wzPPPOE.html, and (3) rpDyDNS.html, and then reading the HTML source.
CVE-2008-1254 1 Zyxel 1 P-660hw 2025-04-09 6.8 MEDIUM N/A
Multiple cross-site request forgery (CSRF) vulnerabilities on the ZyXEL P-660HW series router allow remote attackers to (1) change DNS servers and (2) add keywords to the "bannedlist" via unspecified vectors.
CVE-2008-1256 1 Zyxel 1 P-660hw 2025-04-09 10.0 HIGH N/A
The ZyXEL P-660HW series router has "admin" as its default password, which allows remote attackers to gain administrative access.
CVE-2008-1524 1 Zyxel 3 Prestige 660, Prestige 661, Zynos 2025-04-09 7.5 HIGH N/A
The SNMP service on ZyXEL Prestige routers, including P-660 and P-661 models with firmware 3.40(AGD.2) through 3.40(AHQ.3), has "public" as its default community for both (1) read and (2) write operations, which allows remote attackers to perform administrative actions via SNMP, as demonstrated by reading the Dynamic DNS service password or inserting an XSS sequence into the system.sysName.0 variable, which is displayed on the System Status page.
CVE-2008-1261 1 Zyxel 1 P-2602hw-d1a 2025-04-09 5.0 MEDIUM N/A
The Zyxel P-2602HW-D1A router with 3.40(AJZ.1) firmware provides different responses to admin page requests depending on whether a user is logged in, which allows remote attackers to obtain current login status by requesting an arbitrary admin URI.
CVE-2007-6729 1 Zyxel 1 P-330w Router 2025-04-09 4.3 MEDIUM N/A
Cross-site scripting (XSS) vulnerability in the web management interface in the ZyXEL P-330W router allows remote attackers to inject arbitrary web script or HTML via the pingstr parameter and other unspecified vectors.
CVE-2007-1586 1 Zyxel 1 Zynos 2025-04-09 7.8 HIGH N/A
ZynOS 3.40 allows remote attackers to cause a denial of service (link restart) by sending a request for the name \M via the SMB Mail Slot Protocol.
CVE-2008-1528 1 Zyxel 3 Prestige 660, Prestige 661, Zynos 2025-04-09 4.0 MEDIUM N/A
ZyXEL Prestige routers, including P-660, P-661, and P-662 models with firmware 3.40(AGD.2) through 3.40(AHQ.3), allow remote authenticated users to obtain authentication data by making direct HTTP requests and then reading the HTML source, as demonstrated by a request for (1) RemMagSNMP.html, which discloses SNMP communities; or (2) WLAN.html, which discloses WEP keys.
CVE-2008-1521 1 Zyxel 3 Prestige 660, Prestige 661, Zynos 2025-04-09 6.5 MEDIUM N/A
ZyXEL Prestige routers, including P-660 and P-661 models with firmware 3.40(AGD.2) through 3.40(AHQ.3), allow remote authenticated users to gain privileges by accessing administrative URIs, as demonstrated by rpSysAdmin.html.